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Company to Balloon Tourists to the Edge of Space         If the thought of a rocket ride to space -- or the $250,000 price tag to get there -- leaves you feeling queasy, an Arizona firm thinks it has a gentler, less expensive alternative. Read More WATCH VIDEO: Space Tourism Fears A Virgin Galactic space traveler to-be explains his three biggest fears about sub-orbital spaceflight. Grab-and-Go Beetle Hoards Poo and Gallops         A dung beetle in Africa has traded flight for galloping, picking up dried feces along the way. Read More WATCH VIDEO: 5 Incredible Insect Superpowers Check out these hidden skills insects have that'll knock your socks off. Suicide Machines Destroy Themselves         An artist creates tools that go on the attack, sabotaging themselves by design. Read More WATCH VIDEO: Meet the Man Behind the Oreo Separator Machine! An inventor builds a machine to remove all traces of white fluff from the iconic cookie. Why We Have an Internal Skeleton: Video         Instead of the super-strong shells or exoskeletons so many other animals have, we have internal skeletons that leave us highly vulnerable. But it turns out our skeletons are an evolutionary advantage. Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2013 Discovery Communications, LLC